The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Apr. 14, 2009
Filed:
Jun. 12, 2007
Masaaki Yokota, Tokyo, JP;
Masaaki Yokota, Tokyo, JP;
Tachi-S Co., Ltd., Tokyo, JP;
Abstract
A seat height adjustment mechanism is provided, which includes a backward link element, a ratchet-type drive mechanism operable by an operating lever to cause vertical movement of the backward link element to adjust height of seat, and a locking mechanism. The backward link element is normally locked by the locking mechanism to reinforce the backward link element itself. When the operating lever is rotated during an idle strokeS) inherently given in the ratchet-type drive mechanism, the locking mechanism is actuated to unlock the backward link element, thereby allowing the backward link element to be vertically displaceable through operation of the ratchet-type drive mechanism by further rotation of the operating lever.